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| 題 名 | 箱式涵洞水流之流量連續性及率定曲線 |
|---|---|
| 作 者 | 顏榮甫; 林延郎; 蔡長泰; | 書刊名 | 高苑學報 |
| 卷 期 | 4 1995.02[民84.02] |
| 頁 次 | 頁207-218 |
| 分類號 | 443.1 |
| 關鍵詞 | 箱式涵洞; 無因次流量率定曲線; 流量連續性; Box culvert; Dimensionless flow rating curves; Flow continuity; |
| 語 文 | 中文(Chinese) |
| 中文摘要 | 涵洞水理現象因上、下游水位之不同而有管流、閘流、堰流等不同之流動型態。但各種流型之流量公式計算流量時,在轉換處有流量不連續之情形,增加應用上之困難。本文依據轉換處應具流量連續性之條件導出各種流型之流量係數關係,並依此得出各流型流量公式之適用範圍。依照流量公式之適用範圍,本文發展出箱式涵洞之無因次流量率定曲線。 為探討理論推得之箱式涵洞流量率定曲線之正確性,本文設計三種涵洞型式,並進行一系列水工實驗。實驗結果與理論曲線相當一致,顯示本文所得之箱式涵洞流量率定曲線可為公路設計時預測涵洞通水能力之用。 |
| 英文摘要 | Owing to different water levels of headwater and tailwater, the culvert hydraulic phenomenon causes the flow patterns of pipe flow, gate flow and weir flow. When calculating the discharge with different kinds of discharge formulas, the flow discontinuity happens at the transition point. It causes the difficulty for application. The paper based on the condition of the flow continuity at transition point conducts the relationship of discharge coefficient among different flow patterns and gets the applied ranges for each discharge formula of flow pattern. According to the applied ranges of discharge formula, the dimensionless flow rating curves of box culvert has been developed in this paper. In order to verify the accuracy of predicted discharge by the dimensionless flow rating curve, a series hydraulic experiments were conducted for three kinds of culvert type. The predicted discharge showed good agreement with the observed data. It shows the present flow rating curves of box culvert can be used to predict the conveyance capacity of box culvert for highway design. |
本系統中英文摘要資訊取自各篇刊載內容。